#ifdef CONFIG_USB_VIDEO_CLASS_INPUT_EVDEV
static int uvc_input_init(struct uvc_device *dev)
{
- struct usb_device *udev = dev->udev;
struct input_dev *input;
- char *phys = NULL;
int ret;
input = input_allocate_device();
if (input == NULL)
return -ENOMEM;
- phys = kmalloc(6 + strlen(udev->bus->bus_name) + strlen(udev->devpath),
- GFP_KERNEL);
- if (phys == NULL) {
- ret = -ENOMEM;
- goto error;
- }
- sprintf(phys, "usb-%s-%s", udev->bus->bus_name, udev->devpath);
+ usb_make_path(dev->udev, dev->input_phys, sizeof(dev->input_phys));
+ strlcat(dev->input_phys, "/button", sizeof(dev->input_phys));
input->name = dev->name;
- input->phys = phys;
- usb_to_input_id(udev, &input->id);
+ input->phys = dev->input_phys;
+ usb_to_input_id(dev->udev, &input->id);
input->dev.parent = &dev->intf->dev;
__set_bit(EV_KEY, input->evbit);
error:
input_free_device(input);
- kfree(phys);
return ret;
}
break;
default:
- uvc_printk(KERN_INFO, "unknown event type %u.\n",
- dev->status[0]);
+ uvc_trace(UVC_TRACE_STATUS, "Unknown status event "
+ "type %u.\n", dev->status[0]);
break;
}
}
dev->status, UVC_MAX_STATUS_SIZE, uvc_status_complete,
dev, interval);
- return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+ return 0;
}
void uvc_status_cleanup(struct uvc_device *dev)
uvc_input_cleanup(dev);
}
-int uvc_status_suspend(struct uvc_device *dev)
+int uvc_status_start(struct uvc_device *dev)
+{
+ if (dev->int_urb == NULL)
+ return 0;
+
+ return usb_submit_urb(dev->int_urb, GFP_KERNEL);
+}
+
+void uvc_status_stop(struct uvc_device *dev)
{
usb_kill_urb(dev->int_urb);
+}
+
+int uvc_status_suspend(struct uvc_device *dev)
+{
+ if (atomic_read(&dev->users))
+ usb_kill_urb(dev->int_urb);
+
return 0;
}
int uvc_status_resume(struct uvc_device *dev)
{
- if (dev->int_urb == NULL)
+ if (dev->int_urb == NULL || atomic_read(&dev->users) == 0)
return 0;
return usb_submit_urb(dev->int_urb, GFP_NOIO);